IEC 61097-9:1997

Global maritime distress and safety system (GMDSS) - Part 9: Shipborne transmitters and receivers for use in the MF and HF bands suitable for telephony, digital selective calling (DSC) and narrow band direct printing (NBDP) - Operational and performance requirements, methods of testing and required test results

Specifies the minimum operational and performance requirements and methods of testing for transmitters and receivers capable of voice communication, digital selective calling and narrow band direct printing telegraphy for the GMDSS operating in either the medium frequency band only or in medium and high frequency bands.

General Information

• Status: Published
• Publication Date: 27-Nov-1997
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.060.20 - Receiving and transmitting equipment
• Technical Committee: TC 80 - Maritime navigation and radiocommunication equipment and systems
• Drafting Committee: WG 8 - TC 80/WG 8
• Current Stage: PPUB - Publication issued
• Start Date: 31-Dec-1997
• Completion Date: 28-Nov-1997

Standards Content (Sample)

INTERNATIONAL
IEC
STANDARD 61097-9
First edition
1997-12
Global maritime distress and safety
system (GMDSS) –
Part 9:
Shipborne transmitters and receivers for use in
the MF and HF bands suitable for telephony,
digital selective calling (DSC) and narrow band
direct printing (NBDP) – Operational and
performance requirements, methods of testing
and required test results
Système mondial de détresse et de sécurité
en mer (SMDSM) –
Partie 9:
Emetteurs et récepteurs de bord de navires utilisables dans les
bandes décamétriques et hectométriques pour la téléphonie,
l’appel sélectif numérique (ASN) et l’impression directe à bande
étroite (IDBE) – Exigences d’exploitation et de fonctionnement,
méthodes d’essai et résultats d’essai exigés
Reference number
IEC 61097-9: 1997(E)
Numéros des publications Numbering
Depuis le 1er janvier 1997, les publications de la CEI As from the 1st January 1997 all IEC publications are
sont numérotées à partir de 60000. issued with a designation in the 60000 series.
Publications consolidées Consolidated publications
Les versions consolidées de certaines publications de Consolidated versions of some IEC publications
la CEI incorporant les amendements sont disponibles. including amendments are available. For example,
Par exemple, les numéros d’édition 1.0, 1.1 et 1.2 edition numbers 1.0, 1.1 and 1.2 refer, respectively, to
indiquent respectivement la publication de base, la the base publication, the base publication
publication de base incorporant l’amendement 1, et la incorporating amendment 1 and the base publication
publication de base incorporant les amendements 1 incorporating amendments 1 and 2.
et 2.
Validité de la présente publication Validity of this publication
Le contenu technique des publications de la CEI est The technical content of IEC publications is kept under
constamment revu par la CEI afin qu'il reflète l'état constant review by the IEC, thus ensuring that the
actuel de la technique. content reflects current technology.
Des renseignements relatifs à la date de Information relating to the date of the reconfirmation of
reconfirmation de la publication sont disponibles dans the publication is available in the IEC catalogue.
le Catalogue de la CEI.
Les renseignements relatifs à ces révisions, à l'établis- Information on the revision work, the issue of revised
sement des éditions révisées et aux amendements editions and amendments may be obtained from
peuvent être obtenus auprès des Comités nationaux de IEC National Committees and from the following
la CEI et dans les documents ci-dessous: IEC sources:
• Bulletin de la CEI • IEC Bulletin
• Annuaire de la CEI • IEC Yearbook
Accès en ligne* On-line access*
• Catalogue des publications de la CEI • Catalogue of IEC publications
Publié annuellement et mis à jour régulièrement Published yearly with regular updates
(Accès en ligne)* (On-line access)*
Terminologie, symboles graphiques Terminology, graphical and letter
et littéraux symbols
En ce qui concerne la terminologie générale, le lecteur For general terminology, readers are referred to
se reportera à la CEI 60050: Vocabulaire Electro- IEC 60050: International Electrotechnical Vocabulary
technique International (VEI). (IEV).
For graphical symbols, and letter symbols and signs
Pour les symboles graphiques, les symboles littéraux
et les signes d'usage général approuvés par la CEI, le approved by the IEC for general use, readers are
lecteur consultera la CEI 60027: Symboles littéraux à referred to publications IEC 60027: Letter symbols to
utiliser en électrotechnique, ymboles be used in electrical technology, IEC 60417: Graphical
la CEI 60417: S
graphiques utilisables sur le matériel. Index, relevé et symbols for use on equipment. Index, survey and
compilation des feuilles individuelles, et la CEI 60617: compilation of the single sheets and IEC 60617:
Graphical symbols for diagrams.
Symboles graphiques pour schémas.
Publications de la CEI établies par IEC publications prepared by the same
le même comité d'études technical committee
The attention of readers is drawn to the end pages of
L'attention du lecteur est attirée sur les listes figurant
à la fin de cette publication, qui énumèrent les this publication which list the IEC publications issued
publications de la CEI préparées par le comité by the technical committee which has prepared the
d'études qui a établi la présente publication. present publication.
* Voir adresse «site web» sur la page de titre. * See web site address on title page.

INTERNATIONAL
IEC
STANDARD
61097-9
First edition
1997-12
Global maritime distress and safety
system (GMDSS) –
Part 9:
Shipborne transmitters and receivers for use in
the MF and HF bands suitable for telephony,
digital selective calling (DSC) and narrow band
direct printing (NBDP) – Operational and
performance requirements, methods of testing
and required test results
Système mondial de détresse et de sécurité
en mer (SMDSM) –
Partie 9:
Emetteurs et récepteurs de bord de navires utilisables dans les
bandes décamétriques et hectométriques pour la téléphonie,
l’appel sélectif numérique (ASN) et l’impression directe à bande
étroite (IDBE) – Exigences d’exploitation et de fonctionnement,
méthodes d’essai et résultats d’essai exigés
 IEC 1997 Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including
photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http: //www.iec.ch
Commission Electrotechnique Internationale
PRICE CODE
XA
International Electrotechnical Commission
For price, see current catalogue

– 2 – 61097-9 © IEC:1997(E)
CONTENTS
Page
FOREWORD . 5
Clause
1 Scope . 6
2 Normative references. 7
3 Performance requirements . 8
3.1 Introduction . 8
3.2 Power supplies . 9
3.3 Control . 9
3.4 Interfaces . 9
3.5 Frequency indication. 9
3.6 Distress controls. 9
3.7 Control panel priority . 10
3.8 Labels . 10
3.9 Safety precautions. 11
3.10 Classes of emission . 11
3.11 Frequency bands. 11
3.12 Warming-up period. 11
4 Transmitter . 11
4.1 Frequencies and classes of emission. 11
4.2 Frequency accuracy and stability . 12
4.3 Output power. 12
4.4 Transmitter input . 13
4.5 Permissible warming-up period . 13
4.6 Continuous operation. 13
4.7 Controls and indicators . 13
4.8 Safety precautions. 14
4.9 Power supply. 14
4.10 Synthesizer lock . 14
4.11 Channel switching . 14
4.12 NBDP transmit and receive timing. 14
5 Receiver . 14
5.1 Frequencies and classes of emission. 14
5.2 Frequency stability and accuracy . 15
5.3 Usable sensitivity. 15
5.4 Receiver output . 15
5.5 Permissible warming-up period . 15
5.6 Immunity to interference . 15
5.7 Controls . 15

61097-9 © IEC:1997(E) – 3 –
Clause Page
5.8 Power supply. 16
5.9 Antenna static protection . 16
5.10 Loudspeaker switching . 16
5.11 Noise reducer. 16
5.12 Audio gain control and automatic gain control (AGC). 16
5.13 NBDP transmit and receive timing. 16
6 Radiotelephone alarm signal generator. 16
6.1 Introduction . 16
6.2 General . 16
6.3 Frequency and duration of tones. 17
6.4 Modulation . 17
6.5 Controls . 17
6.6 Duration of alarm signal. 17
6.7 Alarm signal repeat . 17
6.8 Activation of the radio telephone transmitter . 17
6.9 Aural monitoring . 17
7 Methods of testing and required test results . 17
7.1 Test conditions . 18
7.2 Performance check. 18
7.3 Environmental tests . 19
7.4 Electromagnetic compatibility (EMC). 19
7.5 Immunity . 19
7.6 Acoustic noise . 19
7.7 Compass safe distance . 20
7.8 Safety precautions. 20
7.9 General conditions of measurement. 20
8 Transmitter . 22
8.1 General . 22
8.2 Frequency error. 22
8.3 Output power and intermodulation products . 23
8.4 Unwanted frequency modulation . 24
8.5 Sensitivity of the microphone . 25
8.6 Sensitivity of the 600 Ω line input for SSB telephony . 25
8.7 Automatic level control and/or limiter for SSB telephony. 26
8.8 Audio frequency response using SSB telephony. 26
8.9 Power of out-of-band emissions using SSB telephony . 27
8.10 Power of conducted spurious emissions of SSB telephony . 28
8.11 Residual hum and noise power using telephony . 28
8.12 Residual frequency modulation on DSC and NBDP . 29
8.13 Carrier suppression . 29
8.14 Continuous operation.
...